Measuring device



H. HORT.

MEASURING DEVICE.

APPLICATION HLED FEB. 14, 1921.

1 138,827. Patented Dec. 12, 1922.

2 SHEETSSHEET I.-

H. HORT.

MEASURING DEVICE.

APPLICATION FILED FEB. 14, 1921.

1,438,827. V Patented Dec. 922.

2 SHEETS 2.

Patented Dec. 12, 1922.

UNITED STATES PATENT OFFICE.

HERIMANN HURT, OF ESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIENGESELL- SCHAFT, OF ESSEN-ON-THE-RUHR, GERMANY.

MEASURING DEVICE.

Application filed February 14, 1921. Serial No. 444,898.

To all whom it may concern: 7

Be it lmown that I, Dr. TTERMANN Hour, residing at Essen, Germany, a citizen oi the German litepublic, have invented a certain new and useful Improvement in Measuring Devices at which the following is a speci fication.

This invention relates to a measuring device affording the possibility oi accurately determining at any moment-any alterations in the relative position of the axes of the bores of intercoupled gun barrels when being turned about their common trunnion The invention will be further -described with reference to the accompanying drawing which shows one embodiment of the subject matter of the invention ly way of example.

Fig. l a diagram disclosing the measurin device along with the pertinent parts of two guns and serving to determine the devia tions in elevation of the one axis of the bore relatively to the other,

Fig. 2 is a front elevation of a construction embodying the diagram of Fig Fig. 3 is a side elevation of Fig. 2 looking from the right and Fig. 4 is a fragmentary side elevation, partly in section, showing in detail the recording mechanism.

Referring to these drawings and more particularly to Fig. 1, A and A denote the axes of the bores of two gun barrels adapted to turn about a common trunnion axis B. the muzzles of said gun barrels being denoted by a and a. C denotes a disconnectible coupling inserted in a shaft the axis of which is formed by the trunnion axis B. At the m-uzzles a and a the centres of which are indicated by a and a, there are arranged two measuring rods D and E in the following manner: The rectangularly bent rod E is rigidly connected to the muzzle 2 in such way that the limb of said rod E will assume a vertical. position when the axis A assumes a horizontal position, while the free end 6 of the rod E will assume horizontal position at any elevation of the axis of the bore. The straight-lined measuring rod D is mounted on the one hand, rotatably and displaceably on a pivot a ertically disposed underneath the centre a of the muzzle a and, on the other hand, rotatably but not displaceably, on a pivot e for its part mounted on the limb c of the rod The length of the hlnh o is such that its extremity 6* will be located vertically above the extremity (l of the measuring rod D when the axis of the bore A is in horizontal position. As a result of this arrangement and the connection established between the measuring rods l) and E, the relative distance a prevailing between the points 0* and (1 will remain constant whenever the two intercoupled axes A and A are rotated out of their horizontal position indicated by the straight lines a? and a about any desired but mutually eqnal'angles a. It, on the contrary, one of the said axes, say, for example, A, happens to be rotated owing to a defect of the coupling C, about an angle differing from a, say, an angle oi so that the centre of of the gun muzzle will assume the position indicated by a, then the points (Z and 52 will assume the position marked by (Z and c in which. as will be readily seen, the distance (Z differs from the distance (Z (2* and is smaller than this latter. This variation or distance is therefore adapted to form a measure of the change that has taken place in the relative position of the centres a and a of the gun muzzles.

In the form of construction embodying the atom-explained idea and disclosed in Figs. 2 and 3, the gun barrels F and F are adapted to turn about horizontal trunnions (not shown) the axes of which coincide and intermediate which there is inserted a disconnectible coupling (also not shown). On the respective ends of the guns there are rigidly fixed clamps G and H, respectively, of which the one, G, is provided with a depending extension 9 and the other, H, with an arm k extending straight vertically when the axis of the bore is in a horizontal position, and with another arm 7L extending horizontally at any elevationof the gun barrel. The extension 9 and the arm h are provided with pivots g and h which assume a horizontal position when the axes of the bores assume likewise a horizontal position. The pivots g and h support a meas uring rod J, the arrangement devised being such that the said measuring rod is capable of executing a rotation about the pivot hwhile at the same time adapted to turn relatively to the pivot g and to be displaced within the limits of a longitudinal slot i Furthermore the measuring rod J is provided with an extension i projecting beyond the pivot 71 and at the extremity of which there is fixed by means of a hole 2' a point 11* C013- responding to the point denoted by (Z in F 1. In addition there is rigidly fixed to the free end of the arm k a recording mecha nism K. This recording mechanism is adapted to record the movements of the point 2' relatively to a point participating in the elevation of the gun barrel F. The essential parts of this recording mechanism comprise a rcvoluble recording drum M, a displaceablc rod k and a driving mechanism for the recording drum 7& consisting;- of a cord M. To one end of the rod is pivoted apiston 70', which is guided in a cylindrical bore a, and the rod 767 of which passes through the nut 70 closing; the bore 70?, see particularly Fig. l. Between the piston 70 and the nut 70 is placed a spring 70, which tends to move the piston is in the direction of the arrow (Fig. l). The other end of the rod 70 is connected at i (Fig. 2), by a connecting piece 717*, to the scale bar J. Finally, a lever 7c is pivotally connected. with the rod 762 and has one 01 its ends pivoted to the stationary part of the recording mechanism and its other end carries the marking point 7r, standing in contact with the recording drum 7c. The cord M of the drum 72 is led over a guide; roller al located in the vicinity oil? one of the shield pins, to a fixed point m (Fig. 2) in the chamber. The axis of rotation ot the recording drum is as well as the rod 70 extends in a vertical direction when the axis of the bore of the gun barrel F assumes a horizontal position.

In the aforesaid arrangement of the re cording device K, the values measured on the surface of the recording drum i11 in the direction of an (horizontal) axis of the ahscissze represents the-angles of elevation of the intercoupled gun barrels, while the ordinates measured in the direction of a vertical axis represent the changes in the position of the centres of the two gun muszles relatively to each other.

The manner of operation of the hereinbefore described measuring device is as follows:

The coupling (not shown) having been thrown out, theaxes of the bores of the gun barrels F and F are first of all so )ara-tely shifted into the horizontal position by means of the elevating gear. Hereupon, the two barrels are intercoupled and by drawing the cord M a horizontal zero line is drawn on the surface of the recording drum 7: This having been done, the .two gun barrels l and F are swung by means of the elevating gearfirst to the point of maximum elevation andthen hack into the horizontal position. During this elevating operation of essee"? the gun barrels the record drum [9 executes a rotation in the one d rection and, du ing the lowering operation it .ialres a s5 iilar movement in the opposil; f Ii the elevation of the two gun h uniform, the marking point in Will on the zero line on the surface or the drum 11 but when the elevation of one gun barrel varies from that of the other a curve will be marked on the surface ot' the drum, the ordinr'" oi which curve, measured perpendiculaiy to tl e Zero line, changes in the position 0, e oil? two gun inuzzles re to each other, compare what has been s.id in connection with Fig. 1.

its will readily understood, the me ing device constructed and arranged in at cordance with the invention may also be employed to dc.

rmine lateral the one axis of the bore relat other. in this case, the rccordi nism would iave to be lined to the gun barrel oi 2 in such a 11181119 the displaceable rod if will he disposer ld zontally, wh reupon said rod won Hg; rod '5 K to be connected. to the me,

Claims.

A, ineasur v riations or the holes mbri a ineasurin e meeting: said element so to be capable of rotation, means necting said elen'ient with the other barrel so as to be capable of rotation and displacement, recording mechan' m and means connect said measuring element to said recording mechanism whereby the distance of a point of said mea 'nc; element from a fixed point arrarv oil the gun barrels, will he mca 2. measur. d vice for detcrininiiur variations in the relative position of the axes of intercoupled gun ls comprisi measuring); element, means connecting I element to one of said gun barrels so as t be capable of rotation, cans connec' said element to the ther of said ,QZlil bar so as to be capable of rotation arul displacement, a recording; meclr iisin, said measuring element being conne' ed to said device for the rchrt e positi' ha is means conone un barre:

of ii'itcrcoupled gun con gun

recording mechanism whereb e are re corded the variations in thereh position of the barrels for system of co-ordinates.

the bores o5 d n un The foregoing speci ation signed at Essen, Germany, this 9 11c day of llloixin 1920.

DR. HEltll/lihlll HURT, In presence of Hines GOTTSMANN, JOHANN DEOKERS.

one Y 

